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ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/90403

90403

ZIP 90403 is in Santa Monica, California, in Los Angeles County; Pacific time. Santa Monica has 11 ZIP codes in all.

Type
Standard
Time zone
America/Los_Angeles
County
Los Angeles
Population
23,867
Coordinates
34.0308, -118.4921
☼ Live from 90403 — Santa Monica, CA

Weather right now

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NEXRAD radar
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Local time: —

Where 90403 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 90403
  • 🔢 Type 90403 into a pocket calculator and turn it upside down: EOhOG — not quite a word, sorry.
  • ➕ 90403 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110000100100011
  • 🏠 Its numerical neighbours: 90402 (Santa Monica, CA, 1 mi away) and 90404 (Santa Monica, CA, 1 mi away).
  • 🔄 Backwards, 90403 becomes 30409, which is not a ZIP code at all.
  • 👥 25 other ZIP codes are made of exactly the same digits (00934, 03049, 03904, 04039, 04093, 04903, …). The farthest-flung twin is 09034 in APO AE, a military post office, 5,774 miles away.
  • 🧭 Farther south than 79% of all ZIP codes, and farther west than 92%.
  • 🎯1,167 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 90403 and you would come out at 34.03°S, 61.51°E — 981 miles from Saint-Denis, Reunion, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 25m of daylight. Shortest: 9h 53m.
  • 📏 At 1.4 square miles of land, 90403 is bigger than 10% of ZIP codes — room for about 1.1 Central Parks.
🌙 The sky over 90403 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population23,867This ZIP23,867
Households13,165This ZIP13,165
Housing units14,977This ZIP14,977
Median age44.2This ZIP44.2California37.9US 38.9
Median household income$121,925This ZIP$121,925California$99,122US $80,734
Median home value$1,548,900This ZIP$1,548,900California$734,700US $332,700
Median gross rent$2,463This ZIP$2,463California$2,036US $1,413
Bachelor's degree or higher75.7%This ZIP75.7%
Mean commute26.7 minThis ZIP26.7 min
Population density16,903.0 / sq miThis ZIP16,903.0 / sq mi

Business and tax activity

Business establishments1,583This ZIP1,583
Employees10,765This ZIP10,765
Annual payroll$855,966,000This ZIP$855,966,000
Tax returns filed13,490This ZIP13,490
Total adjusted gross income$2,648,935,000This ZIP$2,648,935,000

Land area

Land area1.41 sq miThis ZIP1.41 sq mi
Water area0.10 sq miThis ZIP0.10 sq mi

Other place names in 90403

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 90403

ZIPCityDistance
90402 Santa Monica, CA 0.7 mi
90406 Santa Monica, CA 0.8 mi
90407 Santa Monica, CA 0.8 mi
90408 Santa Monica, CA 0.8 mi
90409 Santa Monica, CA 0.8 mi
90410 Santa Monica, CA 0.8 mi
90411 Santa Monica, CA 0.8 mi
90401 Santa Monica, CA 1.0 mi
90404 Santa Monica, CA 1.1 mi
90405 Santa Monica, CA 1.8 mi

Find every ZIP code within 10 miles of 90403 →

Questions about this ZIP code

Where is ZIP code 90403?

90403 is in Santa Monica, California, in Los Angeles County, part of the Los Angeles-Long Beach-Anaheim, CA metropolitan area. Its published point location is 34.0308, -118.4921.

What county is 90403 in?

90403 lies in Los Angeles County.

What time zone is 90403 in?

90403 uses America/Los_Angeles.

How many people live in 90403?

About 23,867 people live in ZIP code 90403, in 13,165 households, at 16,903.0 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 90403?

$121,925 a year, against $99,122 across California.

What ZIP codes are near 90403?

The closest are 90402 (0.7 mi), 90406 (0.8 mi), 90407 (0.8 mi), 90408 (0.8 mi) and 90409 (0.8 mi).

Is 90403 a PO Box ZIP code?

90403 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “90403 ZIP Code — Santa Monica, California (Los Angeles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/90403

Machine-readable version of these facts:

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